PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 90%

This chart shows the annual and cumulative numbers of protein sequences in released PDB structures. The chart can be viewed for a few different levels of sequence identity since the beginning of the PDB archive. The cumulative bars represent the growth in unique protein sequences (number of polymeric entities) across history. The yearly bars (dark blue) tell how many new protein sequences were added in a certain year.

Note: The total number of sequence clusters in the statistics table is linked to the sequence cluster group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.

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Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761313
19771225
1978328
1979533
1980336
1981844
19821862
19831072
19841183
19851093
19869102
198710112
198823135
198945180
199044224
199151275
199264339
1993224563
19944451,008
19953481,356
19963971,753
19975502,303
19987283,031
19999143,945
200010234,968
200110586,026
200211177,143
200315978,740
2004219110,931
2005245713,388
2006276516,153
2007313919,292
2008289722,189
2009299225,181
2010301228,193
2011282431,017
2012296733,984
2013324537,229
2014396641,195
2015334744,542
2016376448,306
2017415452,460
2018386156,321
2019430960,630
2020524565,875
2021478170,656
2022575376,409
2023550681,915
2024215284,067